@article{INTA_1969_a3,
     author = {A. P. Shirokov},
     title = {Structures on differentiable manifolds},
     journal = {Itogi Nauki i Tekhniki. Seriya Algebra. Geometriya. Topologiya },
     pages = {127--188},
     publisher = {mathdoc},
     year = {1969},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/INTA_1969_a3/}
}